Foetal echoencephalography and Doppler ultrasonography of the middle cerebral artery in canine foetuses

Autor(es)

Feliciano, M. A. R. ^[1] ; Nepomuceno, A. C. ^[2] ; Crivalero, R. M. ^[2] ; Oliveira, M. E. F. ^[2] ; Coutinho, L. N. ^[1] ; Vicente, W. R. R. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Coll Agr & Vet Sci, Dept Anim Reprod, Sao Paulo - Brazil

^[2] Sao Paulo State Univ UNESP, Coll Agr & Vet Sci, Dept Vet Surg, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SMALL ANIMAL PRACTICE; v. 54, n. 3, p. 149-152, MAR 2013.
• Citações Web of Science: 10

Resumo

Objectives This study aimed to evaluate the characteristics of the brain and vascular indicesof the middle cerebral artery of canine foetuses. Methods Twenty-five bitches were selected. Tissue development, echogenicity, echotexture and brain echobiometric data were studied, and the major structures were identified between the 5th and 8th gestational weeks. The area and volume of the brain mass (BMA and BMV), cranial area and volume (AC and VC), brain mass index (BMI) and brain volume index (BVI) were determined. A single ultrasound examination was performed during each studied week (6th, 7th and 8th). Doppler ultrasonography was performed to assess the maximum and minimum velocity, resistance and pulsatility index of middle cerebral artery of the foetuses. Results Echoencephalography was performed to evaluate the morphological characteristics of the central nervous system. Cerebral echobiometry indicated an increase in area and volume of the hemispheres and cranium (P<0 center dot 001) but no changes in BMI or BVI over the gestational period studied. Doppler ultrasonography identified increases in peak systolic velocity (P=0 center dot 0188) and end diastolic velocity (P=0 center dot 0274) and decreases in resistance index (P=0 center dot 0002) and pulsatility index (P<0 center dot 001). Clinical Significance Echoencephalography and spectral Doppler ultrasonography of the middle cerebral artery in canine foetuses might be a useful technique for prenatal care. (AU)

• Processo FAPESP: 11/06011-9 - Ultrassonografia convencional e Dopplerfluxometria materno-fetal na avaliação pré-natal de cadelas gestantes
• Beneficiário: Wilter Ricardo Russiano Vicente
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/16913-7 - Ultrassonografia convencional e dopplerfluxometria materno fetal na avaliação pré-natal de cadelas gestantes
• Beneficiário: Marcus Antônio Rossi Feliciano
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado